Knife sharpener



FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a front view of an embodiment of the present invention.

FIG. 3 is a left side view of an embodiment of the present invention.

FIG. 4 is a back view of an embodiment of the present invention.

FIG. 5 is a right side view of an embodiment of the present invention.

FIG. 6 is a top view of an embodiment of the present invention; and,

FIG. 7 is a bottom view of an embodiment of the present invention.

The broken lines shown in the drawings indicate structure and features which form no part of the claimed design.

The invention pertains to an ornamental design for an article of manufacture, which can be scaled to different sizes. 

CLAIM The ornamental design for an knife sharpener, as shown. 